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. Author manuscript; available in PMC: 2013 May 10.
Published in final edited form as: J Acoust Soc Am. 1996 Oct;100(4 0 1):2425–2438. doi: 10.1121/1.417951

FIG. 2.

FIG. 2

The “vowel space” of 12-, 16-, and 20-week-old infants in relation to the plot published by Peterson and Barney (1952) that was based on vowel productions of 76 men, women, and children.